60b or 
which is less
60b or which is less
60b or which is less
60b or which is less
60b or which is less
Solution:
According to the IS code 456: 2000 clause 23.3. A simply supported or continuous beam shall be so proportioned that clear distance between the lateral restraints does not exceed 60 b or 250 b2/d whichever is less
Where, d= effective depth of the beam
b= breath of the compression face midway between the lateral restraints.
whichever is less
]
For cantilever beam; Clear distance between the free end of cantilever and lateral restrain shall not exceed.
25 b or 
whichever is less.
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